<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input type="text" id="" list="datalist">
    <datalist id="datalist">
        <option value="张三" id="zhangsan">
        <option value="李四" id="lisi">
    </datalist>
</body>
</html>